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2 years ago

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1. If you were to describe a TRANSLATION of triangle ABC, what information would you need to include in your description?

1 answer:

cluponka [151]2 years ago

6 0

A translation is when a triangle moves from one location to another while staying the same size/position.

A rotation is when it changes positions, like it can turn upside down or to the side.

A reflection is when it translates over the x or y axis.

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Can you please help me with this question? What is 4% of 350?

OlgaM077 [116]

X = 4% * 350

x = 4/100 * 350

x = 4/10 * 35

x = 0.4 * 35

x = 14

14 is 4 percent of 350.
___________________

$\sf\ .04=\frac{4}{100}\\\\x=\frac{4}{100}\times350\\\\x=\frac{4\times350}{100}\\\\x=\frac{1400}{100}={\boxed{14}$

8 0

3 years ago

Read 2 more answers

Standard Error from a Formula and a Bootstrap Distribution Sample A has a count of 30 successes with and Sample B has a count of

tia_tia [17]

Answer:

Using a formula, the standard error is: 0.052

Using bootstrap, the standard error is: 0.050

Comparison:

The calculated standard error using the formula is greater than the standard error using bootstrap

Step-by-step explanation:

Given

Sample A Sample B

$x_A = 30$ $x_B = 50$

$n_A = 100$ $n_B =250$

Solving (a): Standard error using formula

First, calculate the proportion of A

$p_A = \frac{x_A}{n_A}$

$p_A = \frac{30}{100}$

$p_A = 0.30$

The proportion of B

$p_B = \frac{x_B}{n_B}$

$p_B = \frac{50}{250}$

$p_B = 0.20$

The standard error is:

$SE_{p_A-p_B} = \sqrt{\frac{p_A * (1 - p_A)}{n_A} + \frac{p_A * (1 - p_B)}{n_B}}$

$SE_{p_A-p_B} = \sqrt{\frac{0.30 * (1 - 0.30)}{100} + \frac{0.20* (1 - 0.20)}{250}}$

$SE_{p_A-p_B} = \sqrt{\frac{0.30 * 0.70}{100} + \frac{0.20* 0.80}{250}}$

$SE_{p_A-p_B} = \sqrt{\frac{0.21}{100} + \frac{0.16}{250}}$

$SE_{p_A-p_B} = \sqrt{0.0021+ 0.00064}$

$SE_{p_A-p_B} = \sqrt{0.00274}$

$SE_{p_A-p_B} = 0.052$

Solving (a): Standard error using bootstrapping.

Following the below steps.

Open Statkey
Under Randomization Hypothesis Tests, select Test for Difference in Proportions
Click on Edit data, enter the appropriate data
Click on ok to generate samples
Click on Generate 1000 samples ---- <em>see attachment for the generated data</em>

From the randomization sample, we have:

Sample A Sample B

$x_A = 23$ $x_B = 57$

$n_A = 100$ $n_B =250$

$p_A = 0.230$ $p_A = 0.228$

So, we have:

$SE_{p_A-p_B} = \sqrt{\frac{p_A * (1 - p_A)}{n_A} + \frac{p_A * (1 - p_B)}{n_B}}$

$SE_{p_A-p_B} = \sqrt{\frac{0.23 * (1 - 0.23)}{100} + \frac{0.228* (1 - 0.228)}{250}}$

$SE_{p_A-p_B} = \sqrt{\frac{0.1771}{100} + \frac{0.176016}{250}}$

$SE_{p_A-p_B} = \sqrt{0.001771 + 0.000704064}$

$SE_{p_A-p_B} = \sqrt{0.002475064}$

$SE_{p_A-p_B} = 0.050$

5 0

2 years ago

Elena went 60 meters in 15 seconds Noah went 50 meters in 10 seconds Elena and Noah both moved at a constant speed .how far did

sukhopar [10]

Answer:

I believe it would be 4 meters in one second

Step-by-step explanation:

I think this because you would divide meters by time.

7 0

3 years ago

Read 2 more answers

A team of scientists estimate the current number of butterflies in a park to be 20 thousand. The butterfly population is expecte

lesantik [10]

C. seems more plausible

3 0

3 years ago

Nina's garden 4 1/5 meters long and 3/10 meter wide. What is the area of Nina's garden?

taurus [48]

Answer:

63/50 as an improper fraction.

1 13/50 as a mixed number

Step-by-step explanation:

3 0

3 years ago